Malfunction Indicator Lamp

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

During prove out or when an engine control malfunction occurs, ground is supplied

to combination meter terminal 23
from ECM terminal 18 (QR25DE engines) or terminal 33 (VQ35DE engines).

When power and ground are supplied, the malfunction indicator lamp illuminates.